chore: add verbatimModuleSyntax: false to tsconfig.spec.json

[nsbarsukov]

projects/core/src/lib/utils/test/get-word-selection.spec.ts:1:27 - error
TS1286: ESM syntax is not allowed in a CommonJS module when 'verbatimModuleSyntax' is enabled.

import {describe, expect, it} from '@jest/globals';

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